Loom for weaving tubular fabrics.



A. E. OHERNAGK. I LOOM FOR WEAVING- TUBULAR FABRICS.

APPLICATION FILED T11R28, 191;.

1,129,642, Patented Feb. 23, 1915. r

4 SHEETS-SHEET l.

A.B.GHERNAOK.

LOOM FOR WEAVING TUBULAR FABRICS.

APPLIGA'HON FILED H3328, 1914.

' Patented Feb. 23, 1915.

4 SHEETSSHEET 2.

A. E. GHERNAGK.

LOOM FOB- WEAVING TUBULAR FABRICS.

APELIGATIONFILBD PEB.2B. 1914.

1 Patented Feb. 23, 1915.

UNITED STATES PATEN ABEL E. CHERNACK, F PAWTUGKET, RHODE ISLAND, ASSIGNOR TD CHERNACK MANU- FACTURIN G COMPANY, RHODE ISLAND.

Specification of Letters Patent.

OF PAWTUCKET, RHODE ISLAND, A CORPORATION OF LOOM FOR WEAVING- TUBULAR FABRICS.

Patented Feb. 23, 1915.

Application filed February 28, 1914. Serial No. 821,886.

, To all whom it may concern limited to the cular path by the Be it known that I, ABEL E. CHERNACK, formerly known as ABRAHAM E. CHEnNAc-K, a subject of the Czar of Russia, and resident of Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Looms for Weaving Tubular Fabrics, of which the following is a specification.

This invention relates to looms of the circularvtype, especially for the purpose of weaving tubular fabrics such as hose, and sheaths covering cores of metal or other ma terial.

The invention relates generally to the type of loom invented by me and set forth in a prior U. S. Letters Patent N 0. 920,728, dated May 4, 1909, said loom having a series of shuttles which are propelled in a cir- .conjoint action of cam grooves in a rotating ring or cylinder and slides reciprocated by said grooves and engaging the specially formed edges of the shuttle base plates or carriers in such manner as to cause a continuous progressive movement of the shuttles in a circular path. In the machine of said prior patent the shuttle operating slides are utilized also to carry the warp threads and form the shed through which the shuttles pass, so that the number of Warp threads employed is necessarily number of slides, and cannot be increased without increasing the number of slides and the diameter of the circular frame of the machine.

The chief object of the present invention is to enable the number of warp threads employed to be very materially increased without increasing the diameter of the machine.

,The invention also has for its object to provide improved means'for maintaining the shed forming portions of the warp threads under proper tension.

To these and other related ends the invention consists in the improvements which I will now proceed to describe and claim, said improvements including harness slides and heddles carried thereby, alternating with the shuttle slides. I

Of the accompanying drawings forming a partof this specification: Figure 1 represents a vertical section through a loom embodying my invention, parts unnecessary for an understanding of the invention being omitted to avoid confusion; Fig. 2 is a diagrammatic view partly in section on line 2-2 of Fig. 1, and showing a development of the actuating cam ring hereinafter described; Fig. 3 represents a vertical section through one side of the guide ring or cylinder taken on the plane of line 33 of Fig. 2, and showing two of the harness slides and a portion of the cam ring; Fig. l represents a view similar to F 3, showing two of the shuttle slides; Figs. 5 and 6 represent side views of two of the harness slides; Fig. 7 represents a lIOllZOIlttl section of a portion of the guide ring or cylinder taken on the plane of line 77 of Fig. 1, and a plan view of parts below said line, some of the parts being omitted to avoid multiplication of details; Fig. 8 represents a top plan view illustrating the means for maintaining the shed-forming portions of the warp threads under tension, and a transverse section of one of the guide members hereinafter referred to; Figs. 9 and 10 represent side views of one of the harness slides and of the tension-1naintaining means shown by Fig. 8; Fig. 11 represents a section on line l1l1 of Fig. 10. Fig. 12 represents a perspective View of one of the guide members.

The same characters indicate the same or similar parts in all the views.

15 represents the frame of the machine mounted on legs 16. The bottom 17 of the frame is provided with a central boss 18 in which is tightly fitted a hollow spindle 19, which may serve as a guide through which a cable or other core to be covered by a tubular fabric Woven by the loom may be fed upwardly. When a tubular fabric having no core is to be woven the upper end of the hollow spindle 1 receives the lower end of a mandrel 90, which the fabric is Woven.

Mounted on the hollow, spindle 19 is sleeve portion of the cam ring carrier which has on the spindle 19.. said flange bearing on a flange 25 on the boss 18.

26 represents avertically elongated cam ring having a flange 97 attached by bolts 28 to the carrier 22. Said carrier has a bevel gear 29 meshing with a smaller bevel gear 30 on the driving shaft 31, the carrier and cam ring being thus rotated.

of the novel features the Q2 about the upper end of In the outer surface of the cam ring 26 are cam grooves 32 and 33 formed as shown by Fig. 2, these grooves reciprocating the shuttle propelling slides 35 and 35 and the harness slides 36 and 36 hereinafter described. Within the frame 15, and rigidly attached thereto, is a guide composed of a series of vertical guide members-37 extending above the frame and above the cam ring 26, and attached to the frame by screws 37. The guide members are separated from each other by vertical .spaces or slots, and the frame 15 holds said members in a circular series. The -slots between the guide members 37 receive the shuttle slides, the opposed sides of said guide members having grooves 38 (Fig. 7) receiving tongues on the shuttle slides. The longer shuttle slides 35 have rolls 39 at their lower ends entering the lower cam groove 32, and rolls 40 at their upper ends engaging the edges of the base plates 41 of the shuttles, said plates being formed as shown by Fig. 2. The shorter shuttle slides 35 have rolls 42 at their lower ends engaging the upper cam groove 33 and rolls 43 at their upper ends also engaging the edges of the shuttle plates 11.

The slides 35, 35 are reciprocated vertically by the cam grooves and operate like the so called warp thread slides in my former machine shown and described in the above mentioned patent, in driving the shuttles by pressure against the inclinededges of the shuttle plates 41, but they do not carry the warp threads as insaid, former machine, their function being confined to driving the shuttles, and the warp threads being carried by the harness slides 36, 36. Said harness slides, which are shown separately by Figs. 5 and 6, are thin elongated plates having longitudinal openings in which wire heddles 45 having warp thread eyes 46 are .located, the lower ends of the heddles being secured to fixed pins 47 and their upper ends to vertically adjustable pins 48 carried by slides 49 which are adjustable by means of screw threaded stems 50 and nuts 51 to maintain asuitable tension on the heddles.

The edges of the harness slides engage guide grooves 52 (Figs. 7 and 8) in the guide members 37. The lower ends of the longer harness slides 36 are provided with rolls 53 engaging the lower cam groove 32, and the lower ends of the shorter harness slides 36 are provided with rolls 54: engaging the upper cam groove 33. The harness slides are therefore reciprocated and moved simultaneously in opposite directions by the cam grooves, so that the warp threads a, engaged with the heddle eyes 46, are caused to form sheds throughwhich the shuttles pass, each shuttle having a suitable bobbin frame 56 (F ig. 1) provided with bearings for the spindles of the usual paper cop tubes which Figs. 1, 3, 7 and 8.

c It will now be seen that the harness slides, each of which may be provided with any so desired number of heddles 45, permit the use of a much larger number of warp threads in proportion to the diameter of the machine frame 15 than would be possible if the warp threads were'carried by the shuttle 35 operating slides, as in 'the machine of.my former patent. I am therefore able to weave a tubular fabric having a relatively largenumber of warp threads on a compact maohine'of reasonable proportions. Means shown by Figs; 1, 8, 9 and 10 are provided for taking up the slack of the warp threads as the shed opens and thus keeping the threads under proper tension. Tothis end levers 62 are pivoted at 63 to fixed cars on the machine frame, said levers carrying rolls 64 over which the warp threads pass as shown by Fig. 1, there being one roll 64 for each harness slide and the roll being formed to'bear on all the threads passing through'ioo 'ing thus caused to exert a constant tension on the warp threads. v

A suitable take-up comprising fluted rolls 66, 67, 68 (Fig. 1) may be employed to move 1 i the Woven fabric 0 awayfrom the weaving 330 point 0:, the rolls being driven by conneo- 1 .tions with the driving shaft 31 as indicated v by Fig. 1.

It will be observed that the harness slid s a are arranged in pairs, each pair including a slide 36 and a slide 36, and that-the pairs of f f slides are arranged in a circular series surrounding the path of the shuttles, the pairs of harness slides alternating withthe shuttle slides, that is to say, a pair of harness slides is interposed betweenveach shuttleslide and the next, as shown by Fig. 7. The engagement ofone slide of each pair with the lower cam groove 32 andthe engagement of the other slide with the upper cam groove 33 causes theslides of each pair to move 'simul- 'taneously in opposite directions at intervals determined by the contours of the cam grooves. The guide grooves 52 in the guide members 37 alternate with the guide grooves l 38 as indicated by Figs. 7 and 8, and the warp thread openings in said guide members extend between the guide grooves 52 so that the warp threads pass freely through the harness slides.

The shuttle slides are hereinafter referred to as shuttle impelling devices, and the harness slides as shedding devices, independent of the shuttle impelling devices and adapted to form a circular shed. I believe that I am the first to embody in a circular loom a set or series of shuttle impelling devices and an independently operating set or series of shedding devices. While the two sets or series of devices are preferably operated by the described mechanism, which is common to both and includes the cam ring with two cam grooves as above described, I do not limit myself to this mechanism, nor to the particular construction of the shuttle impelling devices and shedding devices here shown.

The take-up may be supported by a frame ring 70 attached by screws 71 to the upper ends of some or all of the guide members 37.

Having described my invention, I claim:

1. A circular loom, comprising shuttles movable in a circular path, impelling devices engaging the shuttles, shedding devices independent of the shuttle impelling devices, and mechanism common to the impelling and shedding devices for operating the same, said mechanism including a 1'0- tary cam ring having two cam grooves, adapted to actuate both the shuttle impelling devices and the shedding devices.

2. A circular loom, comprising shuttles movable in a circular path, harness slides arranged in pairs, the several pairs constituting a circular series surrounding the shuttle path, a rotary cam ring having two cam grooves one above the other, and means operated by said cam g'ooves for impelling the shuttles, said cam grooves being connected with the harness slides and adapted to move the slides of each pair simultaneously in opposite directions.

3. A circular loom, comprising shuttles movable in a circular path, a rotating cam ring concentric with the shuttle path and having two cam g .oovcs one above the other, means operated by said cam grooves for impelling the shuttles, and harness slides arranged in pairs, the several pairs constituting a circular series surroui'iding the shuttle path, one slide of each pair being engaged with the lower can groove and the other with the upper cani groove, whereby said harness slidesare moved simultaneously in opposite directions.

' series of guide members,

4. A circular loom, comprising a circular shuttle impelling slides guided by said members, shuttles impelled by said slides, harness slides arranged in pairs and guided by the guide members, the pairs of harness slides alternating With the shuttle slides, and a cam ring having two cam grooves each engaged both with shuttle slides and with harness slides.

5. A circular loom, :omprising a circular series of guide members, a rotating cam ring surrounded by said guide members and having upper and lower cam grooves, shuttle impelling slides guided by said members, and engaged with said grooves, shuttles impelled by said slides, and harness slides arranged in pairs and guided by the guide members, one slide of each pair being ongaged with the lower and the other with the upper cam groove, the pairs of harness slides alternating with the shuttle-slides.

6. A circular loom, comprising a circular series of guide members provided with shuttle slide guides and harness slide guides alternating with the shuttle slide guides, and with warp thread openings extending between the harness slide guides, shuttle slides and harness slides engaged with said guides, shuttles movable by the shuttle slides. and mechanism 'for simultaneously operating all the slides.

7. A circular loom, comprising shuttles movable in a circular path, mechanism for impelling said shuttles, harness slides arranged in pairs, the several pairs constituting a circular series surrounding the shuttle patln mechanism being provided for moving the harness slides of each pair simultaneously in opposite directions, and means operated by the movements of the harness slides for maintaining tension on the shedforming ortions of warp threads engaged with the harness. slides.

8. A circular loom, comprising shuttles movable in a circular path, mechanism for impelling said shuttles, harness slides arranged in pairs, the several pairs constituting a circular series surrounding the shuttle path, mechanism being provided for moving the harness slides of each pair simultaneously in opposite directions, levers pivoted to the supporting frame and provided with warp tliread-engaging rolls. and links connecting said levers with the harness slides.

In testimony whereof I have ailixed my signature, in presence of two witnesses.

ABEL E. CHERNACK.

"Wi tnesses LAURENCE W. EAMns, W ILLIAM H A NDLEY. 

